Miter-tool.



s. HAMMER.

MITER TOOL.

APPLICATION FILED JAN. 9, 191.3. l

Patented Apr. 28, 1914.

Fly- .2.

UNITED STATES" PATENT oEEioE.

STEPHEN HAMMER, OF PORTLAND, OREGON, ASSIGNOR 0F ONE-HALF T0 THOMAS A,

i CLARKE, OF PORTLAND, OREGON.

MITER-TO'OL.

noos-,1549,

specification of Letters raient.. Patented ADI- 23, 1914,

Application filed. January 9, 1913. Serial No. 740,966.

To all 'whom it may concern:

Be 1t known that I, S'rErfI-IEN HAMMER, a

vsubject of Finland, Russia, residing in the cityv of Portland, county of Multnomah, and State of Oregon, have invented certain new anduseful.Improvements in Miter-Tools, of which the following is a specification.

My invention. relates to miter tools, and more vparticularly to a tool adapted to be placed either in an angle, or around an angle formed by two meeting lines or surfaces, and which can be easily adjusted for the purpose of accurately dividing or bisecting the angle and indica-ting the eut in forming a mitered joint.

Among the salient objects of. the invention are,-to provide a tool of the character referred to which-is equally adapted for use in, or around, an angle; to provide a tool of the character referred to which requires no calculation, but needs simply to be closed half wayin order to determine the angle of the miteiyand to this end the mem.- bers which are pivotcd together to constitute this tool are provided longitudinally thereof with marks or-indications for use in adjusting the parts or members andA for indicating when they have been closed halt` way from any opening to wliichthey have been adjusted; and, in. general. to provide a greatlyv simplified and a. much less expensive tool of the character referred to which r is extremely simple in its operation and accurate in its indications. r

The inventikm'iwillt'be readily understood from the following description of one prac- -tical embodiment thereof, fully illustrated on. the acc mupanyingl sheet of drawings, forming a part hereof, and in which- Figure 1 is a side elevation of the inven tion, showing different positions of adjustment in dotted lines; and Fig. 2 is an yedge View thereof.

In the drawings, 'a very simple form orA to a. form concentric with the pivotal axis, so that when the parts are opened to any angle relative to each other, thereare no corners or projections which would prevent the tool from being placed in any angle, with the straight outside edges resting fiat against the surfaces forming the angle. The member 1 is provided along its inner straight edge with a series of close, equally spaced. graduation marks, as at 4. It will be noted that the members 1 and Q areof the same width, in the form here shown, thereby adapting 1t for use' 1n or around Aan angle, said members each having straight .edges at both sides. The member 2 is provided longitudinally thereof and along its middle with a4 center or half way line, as 5, which, if extended, would intersect the pivotal axis of the members 1 and 2. The edges of the member 2 are straight and parallel with each other, and with the line 5, and are equidistantthercfromtat all points. "lhe point on the inner or graduated edge of the member 1, at which theyinner edge of the member 2 intersects it when the tool has been adjusted in or around an angle, is the point to which line 5 of the member 2 should. lie/moved to ascertain the mitcr anglev` or'the cut for .a `mitered joint bctween two lbodies or surfaces to be thus joined. 'It is necessary, thcrefore,-to pro-f vide a series of close, equally. spaced. graduation marks along the `inner edge ofthe member 1. For example, the members 1 and Qcare shown in full lines to be standing at right angles to each other. The inner edge dthe edges of the member 1 are both straight and parallelwith' each other and with the middle line 5, either edge thereof can be used to mark or. indicate the angle onwhich the out is tobe made for the mitered. joint. If the angle of, the twomeeting. bodies is greater- 4than aright-angle, as for example, requiring that the member 2'shou1d, be

vopened out to the position c, shown in dotvted lines, the inner edge of said member 2 would intersect the inner edge of the member 1, as at 7. Having thus adjusted the to'ol to the angle to be fitted, whether itis placed in the angle, or around the angle, the member 2 is closed until the middle line 5 thereof crosses or intersects the inner edge of the member 1 at the point 7, which would put it in the position B, shown in dotted lines, and thereby accurately indicate the equal division of the angle of the two meeting surfaces, and the angle for {tchecut in forming a mitered joint. The part ofthe which is provided longitudinally member 1 thereof, along 'ts inner edge, with the gradnation marks or indications, can, with some l said members being provided advantage, be made of thinner material than the other part of said member 1, whereby to bring the graduation marks-as close as possible to the surface of the member 2 and thereby somewhat facilitate the accurate adjustment of the parts.

I am aware that changes in the details can be made withoutjdeparting from the spirit of the invention, and I do not, therefore7 limit the invention to the specific form here shown for purposes of illustration, except as I may be limited by the hereto appended claims broadly construed.

I claim:.

l. A device of the class described including two members having straight edges and being pivotally connected to be adjusted to different angles relative to each other, one of along its innerv edge with a series of close, equally spaced graduation marks, the other member having an index mark extending centrally and longitudinally thereof, and parallel with the inner edge of the member the center of the pivot of the members coinciding with the index mark, both said index mark and the inner edge of said other member cooperating With the graduation marks of the first mentioned member to indica-te the relative adjustment of the members to bisect an angle to which the parts are adjusted, the inner edge of said other member, when said parts are adjusted to any angle, indicating by the graduations on the first mentioned member the point to which the index mark of said other member is to be moved to bring the member in position to bisect said angle.

2. A device for the purpose set forth including two flat members'of the same width, each having straight Aparallel longitudinal edges and being pivoted together near their ends at points coincident with their middles and adapted to be adjusted to different angles relative to each other, one of said memf/ bers 'being provided along its inner edge With'a series of clpse, equally spaced graduation marks, the other member having an index line extending centrally and longitudinally thereof parallel with its inner edge, the center of the pivot of the members coinciding with the index line` both .said index line and thc inner edge of said member cooperating' with the graduation marks of the first mentioned member to indicate the relative adjustment of the members tobiscet the angle to which the parts are adjusted, said inner edge of one member` when said parts are adjusted to any angle, indicating by the graduations on the first mentioned member the point to which the index line of the said other member is to be moved to bring the member in position to bisect said angle.

3. A miter tool of the character set forth comprising two members pivotally connected rat their ends and adapted to be closed/and opened knife fashion, said members having straight inner edges, one of said members being provided along its inner edge with a series of close, equally spaced graduation marks, 'the other member having an ind'ex line extendingl centrally and longitudinally thereof parallel with its inner edge, the ccnter ot' the pivot of said members coinciding with the said index line, both thc index line and the inner edge of the said lnember co operating with the graduations of the other member to indicate the relative adjustment of the members to bisect the angle to which the members are adjusted, said inner edge of the said member, when said parts are adjusted to any angle, indicating by the graduations the point to which the said index line of the said member is to be moved to bring said member in position to bisect said angle.

4. A miter tool comprising two flat members pivotally connected at their ends and having straight parallel edges and rounded ends which are concentric with the pivot, one of said members being provided along its inner edge with a series of close, equally spaced graduation marks, and the other of said members being provided with an index line extending centrally and longitudinally thereof parallel with its inner edge` the center of the pivot of the member coinciding with the said index lineof the other member, theinner edge of the said other member, when said members are adjusted to any angle, serving to indicate by the graduations 'of the rst mentioned member the point to Which'the index line of the said other member is to be moved to bring the said member in position to bisect said angle.

5. A miter tool comprising two members with rounded ends and straight edges, pivotally connected at their rounded ends to be adjusted to diiferent angular positions rela- `t1ve to cach other, one of said members including two fiat metal parts spaced apart and provided along an inner edge with a series of close, equally spaced indicating marks, and the other of said inembcrs comprising' :i :fiat member1 adapted to close heedge oi 'ho .Quid eeond member Serving to tween the parts of said rst mentioned 1nemindiefxe b r the graduation marks on the ber and being provided With an index line first mentioned member the particular point extending centrally and longitudinally to Whieh the index line is to be moved To 1.5 thereof parallel with its inner edge the cenbring; said vsecond member in pogtion lo J5er loflhe. pvotdfor thenliembes coinciding bisect the angle.

Wit?L i1 le .Ldin en line tie sai other memj T 'A l 1 ber being;f adapted to lie moved to position l STLPHLB HAMMER" the inn i iine into cross-ing relationship In presence ofwith dimming marks on the inner edge T. A, CLARKE, of 'the #mstnientioned member, the inner l Gr. A. NICHOLS. 

